OVIS-4.4.2

This is release OVIS-4.4.2

The principal improvements in this release are as follows:

- Enhancements needed for production convenience
- New slingshot switch samplers designed to run on the slingshot switch
- Config changes in support of slingshot_metrics
- Fix mis-sizing of string in jbuf implementation
- Invalidate RDMA memory descriptors on set delete
- Remove memory leaks in the as_is decomp plugin
- Fix segfault caused by attempting to flush syslog
- Fix handling of DCGM string fields
- Fix `zap_sock` rejected endpoint leak